X-Git-Url: http://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=ncurses%2Ftinfo%2Flib_data.c;h=ff61d69a7e8c984159c045415498d0a29ecb22ef;hp=21b854b92b6f840cc56df61c9d7df4cacca7ad68;hb=9edffa2f21102c06dcf682d58b074c407bcedd0a;hpb=c4d90db4f4e50bb8a971955ce4812262da4a50bc

diff --git a/ncurses/tinfo/lib_data.c b/ncurses/tinfo/lib_data.c
index 21b854b9..ff61d69a 100644
--- a/ncurses/tinfo/lib_data.c
+++ b/ncurses/tinfo/lib_data.c
@@ -41,7 +41,7 @@
 
 #include <curses.priv.h>
 
-MODULE_ID("$Id: lib_data.c,v 1.39 2008/01/13 01:21:59 tom Exp $")
+MODULE_ID("$Id: lib_data.c,v 1.44 2008/05/24 23:09:21 tom Exp $")
 
 /*
  * OS/2's native linker complains if we don't initialize public data when
@@ -109,7 +109,7 @@ NCURSES_EXPORT_VAR(SCREEN *) SP = NULL; /* Some linkers require initialized data
 #define CHARS_0s { '\0' }
 
 #define TGETENT_0 { 0L, FALSE, NULL, NULL, NULL }
-#define TGETENT_0s { TGETENT_0, TGETENT_0, TGETENT_0, TGETENT_0 } 
+#define TGETENT_0s { TGETENT_0, TGETENT_0, TGETENT_0, TGETENT_0 }
 
 NCURSES_EXPORT_VAR(NCURSES_GLOBALS) _nc_globals = {
     0,				/* have_sigwinch */
@@ -140,6 +140,8 @@ NCURSES_EXPORT_VAR(NCURSES_GLOBALS) _nc_globals = {
     0,				/* tgetent_index */
     0,				/* tgetent_sequence */
 
+    0,				/* _nc_windowlist */
+
 #if USE_HOME_TERMINFO
     NULL,			/* home_terminfo */
 #endif
@@ -171,11 +173,9 @@ NCURSES_EXPORT_VAR(NCURSES_GLOBALS) _nc_globals = {
     NULL,			/* tracetry_buf */
     0,				/* tracetry_used */
 
-#ifndef USE_TERMLIB
     { CHARS_0s, CHARS_0s },	/* traceatr_color_buf */
     0,				/* traceatr_color_sel */
     -1,				/* traceatr_color_last */
-#endif /* USE_TERMLIB */
 
 #endif /* TRACE */
 #ifdef USE_PTHREADS
@@ -226,6 +226,7 @@ NCURSES_EXPORT_VAR(NCURSES_PRESCREEN) _nc_prescreen = {
     NULL,			/* real_acs_map */
     0,				/* LINES */
     0,				/* COLS */
+    0,				/* cur_term */
 #ifdef TRACE
     0L,				/* _outchars */
     NULL,			/* _tputs_trace */
@@ -236,21 +237,59 @@ NCURSES_EXPORT_VAR(NCURSES_PRESCREEN) _nc_prescreen = {
 
 /******************************************************************************/
 #ifdef USE_PTHREADS
+static void
+init_global_mutexes(void)
+{
+    static bool initialized = FALSE;
+
+    if (!initialized) {
+	initialized = TRUE;
+	_nc_mutex_init(&_nc_globals.mutex_set_SP);
+	_nc_mutex_init(&_nc_globals.mutex_use_screen);
+	_nc_mutex_init(&_nc_globals.mutex_use_window);
+	_nc_mutex_init(&_nc_globals.mutex_windowlist);
+	_nc_mutex_init(&_nc_globals.mutex_tst_tracef);
+	_nc_mutex_init(&_nc_globals.mutex_tracef);
+    }
+}
+
+/*
+ * Use recursive mutexes if we have them - they're part of Unix98.
+ * For the cases where we do not, _nc_mutex_trylock() is used to avoid a
+ * deadlock, at the expense of memory leaks and unexpected failures that
+ * may not be handled by typical clients.
+ *
+ * FIXME - need configure check for PTHREAD_MUTEX_RECURSIVE, define it to
+ * PTHREAD_MUTEX_NORMAL if not supported.
+ */
+NCURSES_EXPORT(void)
+_nc_mutex_init(pthread_mutex_t * obj)
+{
+    pthread_mutexattr_t recattr;
+
+    memset(&recattr, 0, sizeof(recattr));
+    pthread_mutexattr_settype(&recattr, PTHREAD_MUTEX_RECURSIVE);
+    pthread_mutex_init(obj, &recattr);
+}
+
 NCURSES_EXPORT(int)
-_nc_mutex_lock(pthread_mutex_t *obj)
+_nc_mutex_lock(pthread_mutex_t * obj)
 {
+    init_global_mutexes();
     return pthread_mutex_lock(obj);
 }
 
 NCURSES_EXPORT(int)
-_nc_mutex_trylock(pthread_mutex_t *obj)
+_nc_mutex_trylock(pthread_mutex_t * obj)
 {
+    init_global_mutexes();
     return pthread_mutex_trylock(obj);
 }
 
 NCURSES_EXPORT(int)
-_nc_mutex_unlock(pthread_mutex_t *obj)
+_nc_mutex_unlock(pthread_mutex_t * obj)
 {
+    init_global_mutexes();
     return pthread_mutex_unlock(obj);
 }
 #endif /* USE_PTHREADS */